Took a walk out to the stream in the back woods looking for more chestnuts with seeds, but no luck. However, I did find a lot of elm trees up and down the stream. They were in fairly poor condition with tall, lanky boughs and somewhat soggy bark, but some of them had a decent canopy. I assume our seeds tend to fall in May? I may collect some then.
Looks more like a slippery elm versus american elm, correct?